Mar
Photons meeting: Confined and free-standing perovskite nanowires for X-ray detection
On the Photons meeting, Jesper Wallentin will talk about “Confined and free-standing perovskite nanowires for X-ray detection”:
Metal halide perovskites (MHPs) have shown excellent results in many applications, including X-ray scintillation detection. Nanowires could offer improved sensitivity by exploiting nanophotonic light guiding, and the stability could be improved by growing nanowires physically protected in anodized aluminum oxide (AAO). I will present our work on growth, optical and X-ray characterization of confined and free-standing perovskite nanowires based on AAO templates. We use a one-step solution method to grow arrays single-crystalline CsPbBr3 nanowires in AAO templates, with diameters ranging from 30 to 360 nm. Surprisingly, free-standing CsPbBr3 nanowires can be obtained by the same method. The nanowires are single-crystalline and exhibit excellent photoluminescence and clear light guiding, and can be used for 3D X-ray imaging. The nanowires are process into electrical devices and heterostructures using a perovskite-compatible electron-beam-lithography process based on nonpolar solvents.
About the event
Location:
k-space
Contact:
jesper [dot] wallentin [at] sljus [dot] lu [dot] se